While it isn't Skymasters, both Herb (lead) and I went to GML2007, in Columbus(The Gathering of Mustangs and Legends). It was beyond fabulous.
There are mulitple pictures at
www.airshowbuzz.com.
There is a great collection of videos at
http://www.airshowstuff.com/gml2007.htm
Personally, I thought Patty Wagstaff's flight in a P-51 was incredible.